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Wataru Saito1,Kosuke Mizuno,Gen Inoue,Takayuki Imura1,Toshiyuki Nakazawa,Masayuki Miyagi,Eiki Shirasawa,Kentaro Uchida,Masashi Takaso 대한척추외과학회 2017 Asian Spine Journal Vol.11 No.5
Study Design: Retrospective cohort study. Purpose: To investigate the effect of spinal correction on respiratory muscle strength in patients with Duchenne muscular dystrophy (DMD). Overview of Literature: Several studies have reported that scoliosis correction in patients with DMD does not improve pulmonary function. In these studies, pulmonary function was evaluated using the traditional spirometric values of percent vital capacity (%VC) and percent forced vital capacity (%FVC). However, traditional spirometry may not be suitable for patients with DMD because the results can be influenced by patient fatigue or level of understanding. Therefore, we evaluated respiratory function focusing on respiratory muscle strength using maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), and sniff nasal inspiratory pressure (SNIP), in addition to %VC and %FVC. Methods: We retrospectively reviewed 16 patients with DMD who underwent spinal correction surgery between 2006 and 2011 at Kitasato University Hospital. All patients were males, and the mean age was 13.5 years. Respiratory muscle strength was evaluated using MIP, MEP, and SNIP. Measurements were obtained preoperatively and at 1 and 6 months postoperatively, and %VC and %FVC were obtained preoperatively and within 6 months postoperatively. Results: The mean preoperative and postoperative %VC values were 54.0% and 51.7%, whereas the mean %FVC values were 53.9% and 53.2%, respectively. The mean MIP, MEP, and SNIP values obtained preoperatively and at 1 and 6 months postoperatively were as follows: MIP, 40.5, 42.7 and 47.2 cm H2O; MEP, 26.0, 28.0, and 29.0 cm H2O; and SNIP, 33.4, 33.0, and 33.0 cm H2O; respectively. The mean MIP and MEP values significantly improved postoperatively. There were no significant differences in SNIP, %VC, or %FVC preand postoperatively. Conclusions: By focusing on respiratory muscle strength, our results suggest that scoliosis correction in patients with DMD might have a favorable effect on respiratory function.
Takashi KUSAKA,Takayuki TANAKA,Shun’ichi KANEKO,Yoshihito SUZUKI,Munenobu SAITO,Shuji SEK,Naohisa SAKAMOTO,Hidekazu KAJIWARA 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper describes the assist force control of semi-active assist system ”Smart Suit” for horse trainer. We developed a soft and flexible power assist device named ”Smart Suit” for reducing horse trainers’ physical fatigue in their horse training works in order to prevent their spine or legs injuries. The smart suit is a kind of semi-active and flexible power assist devices. In order to gain the suitable assist force for periodical horse trainers’ motion, the assist force control method based on the periodical input control was developed in this study. Also, for stabilizing their horse riding motion, we developed the assist force control method considering their dynamic stability by controlling their center of gravity on the zero moment point (ZMP)which is the dynamic stable point.
Management of Remnant or Recurrent Lesions after Endoscopic Papillectomy
Ichiro Yasuda,Saito Kobayashi,Kosuke Takahashi,Sohachi Nanjo,Hiroshi Mihara,Shinya Kajiura,Takayuki Ando,Kazuto Tajiri,Haruka Fujinami 대한소화기내시경학회 2020 Clinical Endoscopy Vol.53 No.6
Endoscopic papillectomy (EP) for ampullary adenomas achieves cure rates ranging from 76% to 90%, and recurrence rates are as high as 33%. If remnant or recurrent lesions after prior EP are endoscopically visible and are not suspected of intraductal extension into the biliary or pancreatic duct, repeated snaring and cutting can be performed until all visible lesions are completely resected. However, endoscopic ablative therapies, particularly argon plasma coagulation, can be attempted for tiny or uncertain remnant and recurrent lesions. In addition, intraductal radiofrequency ablation has recently been attempted for residual intraductal lesions after EP at several institutions. Although still under investigation, it has shown some promise. It might be offered as an alternative to surgery, particularly in patients who are unfit for surgery or those who refuse to undergo surgery
(Katsumi Tsuchiya),(Masanobu Koshihata),(Tahei Tomida),(Takayuki Saito) 한국화학공학회 1999 Korean Journal of Chemical Engineering Vol.16 No.5
The dynamic process of gas absorption from a CO₂ bubble into a liquid is examined in the presence of satellite bubbles. The bubble under consideration is held stationary, except its jittering, by the liquid flowing downward. The mass transfer rate is determined by monitoring the rate of reduction in the equivalent bubble diameter during the initial absorption process. It is found that the interaction with the satellite bubbles generally hampers the dissolution of the primary bubble. The extent of reduction in the dissolution rate increases with the net contacting time during the interaction. When the secondary bubbles interact with the primary bubble mainly outside of its wake, however, the dissolution tends to be enhanced due to induced turbulence in the surrounding liquid flow. A simple theoretical model is developed to simulate the observed results as well as the basic features prevailing in a recently proposed scheme, called the GLAD system, for shallow injection of CO₂ gas into seawater.
Tsuchiya, Katsumi,Koshihata, Masanobu,Tomida, Tahei,Saito, Takayuki 한국화학공학회 1999 Korean Journal of Chemical Engineering Vol.16 No.5
The dynamic process of gas absorption from a CO₂ bubble into a liquid is examined in the presence of satellite bubbles. The bubble under consideration is held stationary, except its jittering, by the liquid flowing downward. The mass transfer rate is determined by monitoring the rate of reduction in the equivalent bubble diameter during the initial absorption process. It is found that the interaction with the satellite bubbles generally hampers the dissolution of the primary bubble. The extent of reduction in the dissolution rate increases with the net contacting time during the interaction. When the secondary bubbles interact with the primary bubble mainly outside of its wake, however, the dissolution tends to be enhanced due to induced turbulence in the surrounding liquid flow. A simple theoretical model is developed to simulate the observed results as well as the basic features prevailing in a recently proposed scheme, called the GLAD system, for shallow injection of CO₂ gas into seawater.